Stalk-eyed flies

Definition

A group of flies characterized by greatly elongated eye stalks, which are used in visual displays during courtship.

Etymology

From the prominent, stalk-like appearance of their eyes.

Example

Stalk-eyed fly males use their exaggerated eye stalks to attract females and compete for mates.

Related Terms

• Eye stalks
• Sexual dimorphism
• Courtship

Usage Notes

The length and width of the eye stalks are often correlated with male fitness.